i have aftermarket night glow gauges and when i start the car and turn on the lights they blink on and off for about 10 minutes while im driving and sometimes turn off for like a minute before it starts blinking again, so if anyone could help out and give me some advice or tell me what u think the problem is, any help would be great, thanks in advance.

 

There is a bad connection somewhere. Double check the power wire to make sure it is connected properly (i.e. soldered or a butt connector) and that it isn't shorting out on anything metal. You can also cover the connection with electrical tape to make sure it isn't touching anything.